A mysterious girl shows up at Camp Half-Blood claiming to know the demigods and what they have been through. Meanwhile at the same time a new enemy is rising and the demigods don't know if they can trust her, she knows things about them that they have never told anyone. She wants to gain their trust but can she if they think she's the enemy? Will they be able to stop what's coming? DISCLAIMER: I do not own any of the Percy Jackson characters. I only own the plot and whatever characters I create. Thank you for reading, hope you enjoy.